11721052 has 18 divisors (see below), whose sum is σ = 23478392. Its totient is φ = 5015544.

The previous prime is 11721049. The next prime is 11721077. The reversal of 11721052 is 25012711.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17793 + ... + 18439.

Almost surely, 2^11721052 is an apocalyptic number.

It is an amenable number.

11721052 is an abundant number, since it is smaller than the sum of its proper divisors (11757340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11721052 is an frugal number, since it uses more digits than its factorization.

11721052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 11721052 is about 3423.6021965176. The cubic root of 11721052 is about 227.1549460604.

Adding to 11721052 its reverse (25012711), we get a palindrome (36733763).

The spelling of 11721052 in words is "eleven million, seven hundred twenty-one thousand, fifty-two".